what is Unicode

completo aqui======================================Computers store every piece of text using a “character encoding,” which gives a number to each character. For example, the byte 61 stands for ‘a’ and 62 stands for ‘b’ in the ASCII encoding, which was launched in 1963. Before the web, computer systems were siloed, and there were hundreds of different encodings. Depending on the encoding, C1 could mean any of ¡, Ё, Ą, Ħ, ‘, ”, or parts of thousands of characters, from æ to 品. If you brought a file from one computer to another, it could come out as gobbledygook.Unicode was invented to solve that problem: to encode all human languages, from Chinese (中文) to Russian (русский) to Arabic (العربية), and even emoji symbols like or
; it encodes nearly 75,000 Chinese ideographs alone. In the ASCII encoding, there wasn’t even enough room for all the English punctuation (like curly quotes), while Unicode has room for over a million characters. Unicode was first published in 1991, coincidentally the year the World Wide Web debuted—little did anyone realize at the time they would be so important for each other. Today, people can easily share documents on the web, no matter what their language.